/*******************************************************************************
	Author						: Aravindan Premkumar
	Unregistered Copyright 2003	: Aravindan Premkumar
	All Rights Reserved
	
	This piece of code does not have any registered copyright and is free to be 
	used as necessary. The user is free to modify as per the requirements. As a
	fellow developer, all that I expect and request for is to be given the 
	credit for intially developing this reusable code by not removing my name as 
	the author.
*******************************************************************************/

#include "stdafx.h"
#include "InPlaceEdit.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

#define CTRL_C	0x3
#define CTRL_V	0x16
#define CTRL_X	0x18

/////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit
CInPlaceEdit::CInPlaceEdit()
{
  m_iRowIndex= -1;
  m_iColumnIndex = -1;
  m_bESC = FALSE;
  m_strValidChars.Empty();
}

CInPlaceEdit::~CInPlaceEdit()
{
}

BEGIN_MESSAGE_MAP(CInPlaceEdit, CEdit)
//{{AFX_MSG_MAP(CInPlaceEdit)
ON_WM_KILLFOCUS()
ON_WM_CHAR()
ON_MESSAGE(WM_PASTE, OnPaste)
ON_WM_CREATE()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit message handlers

LRESULT CInPlaceEdit::OnPaste(WPARAM /*wParam*/, LPARAM /*lParam*/)
{
  if (m_strValidChars.IsEmpty())
  {
    return 0;	
  }

  CString strFromClipboard;

  // get the text from clipboard
  if(OpenClipboard()) {
    HANDLE l_hData = GetClipboardData(CF_TEXT);
    if(NULL == l_hData) {
      return 0;
    }
		
    char *l_pBuffer = (char*)GlobalLock(l_hData);
    if(NULL != l_pBuffer) {
      strFromClipboard = l_pBuffer;
    }

    GlobalUnlock(l_hData);
    CloseClipboard();
  }

  // Validate the characters before pasting 
  for(int iCounter_ = 0; iCounter_ < strFromClipboard.GetLength(); iCounter_++)
  {
    if (-1 == m_strValidChars.Find(strFromClipboard.GetAt(iCounter_)))
    {
      return 0;
    }
  }
		
  //let the individual control handle other processing
  CEdit::Default();	

  return 0;
}

void CInPlaceEdit::OnKillFocus(CWnd* pNewWnd) 
{
  CEdit::OnKillFocus(pNewWnd);
	
  FinishEdit();

  ShowWindow(SW_HIDE);
}

void CInPlaceEdit::FinishEdit()
{
  // Get the text in the edit ctrl
  CString strEdit;
  GetWindowText(strEdit);

  // Send Notification to parent of edit ctrl
  LV_DISPINFO dispinfo;
  dispinfo.hdr.hwndFrom = GetParent()->m_hWnd;
  dispinfo.hdr.idFrom = GetDlgCtrlID();
  dispinfo.hdr.code = LVN_ENDLABELEDIT;
  
  dispinfo.item.mask = LVIF_TEXT;
  dispinfo.item.iItem = m_iRowIndex;
  dispinfo.item.iSubItem = m_iColumnIndex;
  dispinfo.item.pszText = m_bESC ? LPTSTR((LPCTSTR)m_strWindowText) : LPTSTR((LPCTSTR)strEdit);
  dispinfo.item.cchTextMax = m_bESC ? m_strWindowText.GetLength() : strEdit.GetLength();
	
  GetParent()->SendMessage(WM_NOTIFY, GetParent()->GetDlgCtrlID(), (LPARAM)&dispinfo);
}

void CInPlaceEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
  // TODO: Add your message handler code here and/or call default
  if(nChar == VK_RETURN){
    GetParent()->SetFocus();
    return;
  }

  if ((m_strValidChars.IsEmpty()) || ((-1 != m_strValidChars.Find(static_cast<TCHAR> (nChar))) || 
                                      (nChar == VK_BACK) || (nChar == CTRL_C) || (nChar == CTRL_V) || (nChar == CTRL_X)))
  {
    CEdit::OnChar(nChar, nRepCnt, nFlags);
  }
  else
  {
    MessageBeep(MB_ICONEXCLAMATION);
    return;
  }
}

BOOL CInPlaceEdit::PreTranslateMessage(MSG* pMsg) 
{
  // TODO: Add your specialized code here and/or call the base class
  if (WM_KEYDOWN == pMsg->message){
    switch(pMsg->wParam){
    case VK_ESCAPE:
      m_bESC = TRUE;
      GetParent()->SetFocus();
      return TRUE;
    case VK_RETURN:
    case VK_TAB:
      FinishEdit();
      GetParent()->PostMessage(WM_KEYDOWN, pMsg->wParam);
      return TRUE;
    default:
      break;    //do nothing      
    }
  }

  return CEdit::PreTranslateMessage(pMsg);
}

int CInPlaceEdit::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
  if (CEdit::OnCreate(lpCreateStruct) == -1)
    return -1;
	
  // TODO: Add your specialized creation code here
  // Set the proper font
  CFont* pFont = GetParent()->GetFont();
  SetFont(pFont);
	  
  return 0;
}

void CInPlaceEdit::SetWindowText(int nItem, int nSubItem, const CString &sText)
{
  CEdit::SetWindowText(sText);
  
  m_iRowIndex = nItem;
  m_iColumnIndex = nSubItem;

  m_strWindowText = sText;

  SetSel(0, -1);
}
